Detector



April 7, 1925. f 1,532,523

F. WEINBERG DETECTOR Filed Auel. 11. 1923 Emefy s wlTqEss: ATTORNEY Patented Apr. 7, 1925.

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DETECTOR..-

Applcation led August 11, 1923. Serial No. (S5-6,869.

To all whom t may concern:

Be it known that I, FRED WEINBERG, a citizen of the United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented new and useful Improvements in Detectors, of which the following is a. specification.

This invention has reference to wireless telegraph and telephony and has particular reference to crystal detectors for receiving apparatus.

An object of the present invention is the provision of a combination detector constructed for use with the. usual contact wire and mineral, or with two contacting minerals, so that the detector maybe easily and quickly changed from one form to the other.

With the above and other objects in view, the invention further includes the following novel features and details of construetion, t-o be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings z- Figure 1 is an elevation of the invention showing a detector arranged for use with two minerals.

Figure 2 is a plan view of the same.

Figure 3 is a vertical transverse sectional view.

Figure 4C is an elevation showing the detector arranged for use with one mineral.

Referring in detail to the drawings, wherein like characters of reference denote corresponding parts, the reference character 1() indicates a base which is madey from suitable insulating material and which has mounted thereon a cup or receptacle 11 which is adapted to hold a crystal of any suitable character, such as tellurium, galena, pyrites, silicon or the like, as indicated at 12, and which may be held in place by set screws 13. The receptacle 11 is formed of metal and is longitudinally connected to a binding post 14 by means of a conductor wire 15.

Secured to the base 10 by screws 16 is an arch-shaped guide 17, the said guide being electrically connected to a binding post 18 by means of a conductor wire 19.

The guide 17 is provided with an opening for the passage of a hollow arm 20, whosev outer end is provided with an Vinsulated nger piece 21. Extending from the opposits inner end of the arm is a Contact wire 22 which is movable longitudinally within the arm and which Vis yieldingly pressed outward as indicated at 23, so that its outer end may be positioned in contact with the crystal 12 in the usualv manner.

The inner'end of the arm 2O vis externally threaded and is provided with a collar' 211 at the inner end of the threads. The arm V2O is further surrounded by a spring 25 vvide a detector which includes cont-acting crystals. A partition 29 is provided in the receptacle 27 and when the receptacle is in use, the outer end ofthe contact wire will contact this partition and will force the said contact wire upward into the arm 20. The crystal 28 may thus serve the purpose of the ordinary contact wire. Crystals of any suitable character may be utilized, such as zincite for the receptacle 26 and tellurium for the crystal 12.

It will be apparent from the foregoing description and accompanying drawings, that the detector may be used with a single crystal and contact wire, or the latter may be eliminated without the necessity ofits removal and the detector used with two contacting crystals.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

I-Iaving described the invention what isv claimed is 1. In a detector for wireless apparatus,v

the combination with a iixed crystal, of a movable arm, a contact wire carried thereby for contact with the fixed crystal, means whereby a crystal may be removably secured to the arm and means included in the securing means to provide a housing for the contact wire.

2. In a detector for wireless apparatus, the combination with a' fixed crystal, of a llO movable arm,` a v1'engi-t. udine-Hy movable con--` tact VWire:extending from onelend of the' arm for contact with the crystal, meansi'or` yeldingly forcing` thecontact :Wire outward, 1

movable arm, a ccntacb Wire: carried thereby for Contact With'ithe fxedcrystailgh second ,crystahand combined means including a ,sleeve hamnga threaded engagement with 5 means whereby ay crystal may be removably H@ end df th'ilm for removably securing secured te the arm and mea-ns included-iin.:

the securing means whereby the contact Wire will be forced inwardly-Within thearm.-V

` 3. In a detector for Wireless apparatus, thecomhiaton With"i`a. Xed rystah cfa thefsaid second crystal to the arm for contact with the xed crystal and to provide a housing-for zthe acont-act Wire.

In testimony whereof I afix my signature. 

